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7 votes
1/2(-9 + y)=2.5 solve for why. Please show me your steps

2 Answers

8 votes

Answer:


(1)/(2) ( - 9 + y) = 2.5 \\ - 4.5 + 0.5y = 2.5 \\ minus \: - 45 \: both \: sides \: of \: the \: equation \\ (0.5y)/(0.5) = - ( 7)/(0.5) \\ y = 14

User Krishna Jangid
by
5.8k points
9 votes

Answer:

Y = 14

Explanation:

1/2(-9 + y) = 2.5

1/2 * -9 = -4.5

1/2 * y = 0.5y

-4.5 + 0.5y = 2.5

+4.5 +4.5

0.5y = 7

/0.5 /0.5

y = 14

User Alexander Kurakin
by
5.0k points